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AMegane 3PetrolvsB125dDiesel
  • MotorwayMotorwayRange and charging
  • PerformancePerformance0-100, top speed
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  • SpecsMegane 3 · 125d

Renault Megane 3 RS 265 vs BMW 125d F20LCI: which is truly faster?

Simulated drag race 0 → 1,000 m in real time. Synchronised speed counters and stopwatch. Physics calibration on 7 manufacturer measurements.

compact · 2011 vs 2018 · Methodology
RenaultPetrolFaster

Megane 3 RS 265

265 hp · 360 Nm · 1,376 kg · 2011

VS
BMWDiesel

125d F20LCI

224 hp · 450 Nm · 1,480 kg · 2018

Result · 0–100 km/h

ARenault Megane 3 RS 265

6.08 s

Gap0.40 sin favour of Megane 3 RS 265
BBMW 125d F20LCI

6.48 s

Summary · Caralogy simulation
MeasureMegane 3 RS 265125d F20LCIGap
0–100 km/h6.08 s6.48 s0.40 s · Megane 3 RS 265
400 m standing start14.03 s14.68 s0.65 s · Megane 3 RS 265
1,000 m standing start24.97 s26.40 s1.43 s · Megane 3 RS 265
Top speed (electronically limited)250 km/h240 km/h10 km/h · Megane 3 RS 265
Power-to-weight ratio5.19 kg/hp6.61 kg/hpbetter ratio · Megane 3 RS 265

Watch the race

Standing-start drag race, calibrated on manufacturer splits. The gap shows at each stage.

RenaultPetrolMegane 3 RS 265
Speed
0km/h
Timer
0,00s
Distance
0m
BMWDiesel125d F20LCI
Speed
0km/h
Timer
0,00s
Distance
0m
100 m
200 m
300 m
400 m
500 m
600 m
700 m
800 m
900 m
1000 m
0m → 1000m
Gap0m

Stage-by-stage comparison

Simulated performance at each stage. Best value in bold.
StageMegane 3 RS 265125d F20LCI
0–30 km/h1.64 s1.88 s
0–50 km/h2.74 s3.03 s
0–80 km/h4.58 s4.83 s
0–100 km/h6.08 s6.48 s
0–120 km/h7.69 s8.57 s
0–160 km/h12.40 s14.58 s
0–200 km/h19.91 s25.23 s
400 m standing start14.03 s14.68 s
1,000 m standing start24.97 s26.40 s
Top speed limited250 km/h240 km/h

Parameters and assumptions

Simulation

Start
Standing, straight line
Surface
Dry asphalt, 23°C
Wind
None
Driver
1 person, 75 kg

Calibration

Splits
0–100, 0–200 manufacturer
Power curve
Real measurement (Caralogy)
VMax
Manufacturer limited
Transmission
Losses integrated in model

Physics model calibrated on manufacturer splits. The limited top speed is not the real aerodynamic top speed of the vehicles.

Under the bonnet

Manufacturer technical specifications. The power-to-weight ratio is the key physical factor in a drag race.

Renault

Megane 3 RS 265

5,19kg/hpratio better by 1,41 kg/hp
CharacteristicValueDetail
Power265 hpPending
Torque360 Nm
Weight1 376 kgmanufacturer kerb weight
DrivetrainTraction
Gearbox6-speed manual
BMW

125d F20LCI

6,61kg/hpcompensated by −104 kg
CharacteristicValueDetail
Power224 hp4 cyl
Torque450 Nm
Weight1 480 kgmanufacturer kerb weight
Drivetrain-
Gearbox8-speed Steptronic

The start: 0 to 100 km/h

Off the line, the Megane 3 RS 265 hits 100 km/h in 6.08 s versus 6.48 s for the 125d. At this point, the Megane 3 RS 265 leads by 0.40 s and sits roughly 6 m ahead.

From 100 km/h to 400 metres

At 200 metres, the Megane 3 RS 265 is doing 137 km/h against 130 km/h for the 125d. The gap is 0.38 s. The gap remains stable from the start.

At 400 metres standing start, the Megane 3 RS 265 crosses the line in 14.03 s versus 14.67 s. The 0.65 s gap represents roughly 29 m of track - two to three car lengths.

Beyond 400 metres: top speed comes into play

Past 400 metres, the Megane 3 RS 265 continues to build its lead. At 600 metres, it runs at 193 km/h versus 180 km/h. At 1,000 metres, the Megane 3 RS 265 finishes in 24.97 s versus 26.39 s, with a 1.43 s lead. Both vehicles have similar top speeds (250 (i.e. 155 mph - industry threshold) vs 240 km/h), preventing any comeback.

What the numbers don’t tell you

Both rivals are electronically governed, but not at the same level: the Megane 3 RS 265 is capped at 250 (i.e. 155 mph - industry threshold) km/h, the 125d at 240 km/h. This isn’t a physical engine limit - it’s a manufacturer choice, usually for tyre safety or homologation reasons. Neither car reaches its true aerodynamic top speed.

With two combustion powertrains, the difference comes down to power-to-weight ratio (5.19 kg/hp vs 6.61 kg/hp) and transmission (Manual vs Automatic).

In European road use (130 km/h max), both vehicles reach the legal speed limit in under 9.81 seconds. The 0.40 s difference in 0 to 100 km/h is mostly felt in motorway merging and overtaking.

Compare with other alternatives

Swap one of the two models to explore an equivalent duel in the same segment.

Instead of 125d F20LCI
Peugeot 308 GTi 270BMW 128tiBMW 128ti

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Frequently asked questions

Over 0–100 km/h, Megane 3 RS 265 wins (6,08 s vs 6,48 s).

Megane 3 RS 265 goes from 0 to 100 km/h in 6,08 seconds (calibrated simulation).

Megane 3 RS 265: 265 hp, ratio 5,19 kg/hp. 125d F20LCI: 224 hp, ratio 6,61 kg/hp.

Megane 3 RS 265: 250 km/h. 125d F20LCI: 240 km/h.